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Old 12th January 2009, 11:27 PM
dchicks Offline
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Join Date: Sep 2005
Location: Atlanta, GA
Age: 52
Posts: 16
eth0 is now eth1 - how to fix?

Hi folks,

I had to have a new motherboard put into my system. Since I use the on-board NIC, the MAC address changed. When Fedora (8) booted, it faithfully created a new device (eth1) and assigned all the network functions to that device. The problem is, I've got software (vmware server is an example) that is looking for eth0. While there are ways to change the device the software is looking for, I'd really rather just get back to using eth0 for my default network device identifier. I've tried everything I can think of to get it back to where I want, but it's just not happening. Can anyone point me in the right direction?

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Old 12th January 2009, 11:47 PM
marko Offline
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Join Date: Jun 2004
Location: Laurel, MD USA
Posts: 7,097
become the root user, run system-config-network,
on the Devices tab, highlight the eth0 interface and press the Edit button.
That should bring up the Ethernet Device panel and on Hardware Device tab
check the "Bind to MAC address" box and hit the probe button.
It should look at the ethernet hardware it can see which should now be the
new onboard one.

save the change with File ->Save and Quit

The tool has deactivate and activate buttons but I like to do the full restart with:
service network restart
on the command line, that's assuming you use network and not NetworkManager,
if the latter do:
service NetworkManager restart
PS. if you like dealing with the raw config files, you can go to /etc/sysconfig/network-scripts and
move the ifcfg-eth1 to ifcfg-eth0 (that is "clobber" the old ifcfg-eth0 with the new ifcfg-eth1 file):
cd /etc/sysconfig/network-scripts
mv -f ifcfg-eth1 ifcfg-eth0
then do the respective restart like above.

Last edited by marko; 12th January 2009 at 11:51 PM.
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Old 13th January 2009, 12:03 AM
dchicks Offline
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Join Date: Sep 2005
Location: Atlanta, GA
Age: 52
Posts: 16
Thanks, marko

It was hitting the "Probe" button that I was missing. Somehow, I skimmed right passed it when I was doing this dancer earlier.
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eth0, eth1, fix

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